Income Taxes (Narrative) (Details) $ / shares in Units, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2021 AUD ($)	Dec. 31, 2015 USD ($) $ / shares
Income Tax Disclosure [Abstract]
Payments for ATO Settlement	$ 62,000	$ 83,000
Sale of Stock, Percentage of Ownership before Transaction			77.60%
Proceeds from Divestiture of Businesses | $			$ 1,200,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax, Per Basic Share | $ / shares			$ 979,000,000